Tube Holder, Clear Storage Box Back Catalog number: 400253 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9989-20 Sorbent Tube, Beaded Carbon, 6X70, 140/70, 20/BX Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 800071 Tube Holder Housing End, 5/8", for 1/4" OD, Open E Price on request